TechCrunch reports on the Top 20 Twitter applications (by monthly unique visits). I haven’t used most of these applications myself, with the exception of Twitpic. But if you’re looking to reach out to tweeple, this is a good way to figure out the myriad ways to do it: 

 

Twitter Applications Monthly unique visits (Compete) 
1. Twitpic 1,236,828
2. Tweetdeck 285,864
3. Digsby 233,472
4. Twittercounter 212,200
5. Twitterfeed  149,812
6. Twitterholic 147,164
7. Twhirl 143,333
8. Twitturly 88,793
9. Twtpoll 74,154
10. Retweetist 60,051
11. Tweepler 51,304
12. Hellotxt 45,754
13. Twitdom 45,411
14. Tweetscan 44,463
15. Tweetburner 41,754
16. Tweetvisor 31,621
17. Twittervision 30,708
18. Twitterfall 29,592
19. Monitter 25,433
20. Twibs 17,168
21. Twistori 16,229
22. Twitbin 14,986

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